Final answer:
The title of Hitler's autobiography and treatise is 'Mein Kampf,' a key work in which he expounded his extremist ideologies and future plans for Germany.
Step-by-step explanation:
The title of Adolf Hitler's autobiography and treatise is Mein Kampf, which translates to "My Struggle" in English. This work was composed during Hitler's imprisonment following the failed Beer Hall Putsch in 1923. In Mein Kampf, Hitler outlined his extremist German nationalist and anti-Semitic ideologies, his plans for the domination of the so-called pure German "Aryan race," his hatred for communism and Bolshevism, and the concept of lebensraum ("living space"). These ideas provided the foundation for the future actions and policies of the Nazi Party when they seized power in Germany.